154964497 has 2 divisors, whose sum is σ = 154964498. Its totient is φ = 154964496.

The previous prime is 154964489. The next prime is 154964507. The reversal of 154964497 is 794469451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137733696 + 17230801 = 11736^2 + 4151^2 .

It is a cyclic number.

It is not a de Polignac number, because 154964497 - 2³ = 154964489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154964497.

It is not a weakly prime, because it can be changed into another prime (154944497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77482248 + 77482249.

It is an arithmetic number, because the mean of its divisors is an integer number (77482249).

Almost surely, 2^154964497 is an apocalyptic number.

It is an amenable number.

154964497 is a deficient number, since it is larger than the sum of its proper divisors (1).

154964497 is an equidigital number, since it uses as much as digits as its factorization.

154964497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 49.

The square root of 154964497 is about 12448.4736815402. The cubic root of 154964497 is about 537.1275192562.

The spelling of 154964497 in words is "one hundred fifty-four million, nine hundred sixty-four thousand, four hundred ninety-seven".